Closing bags



23 Aug 1, P. GANGLER CLOSING BAGS Criminal Filed Oct. 6, 1923 3 Sheets-Sheet 1 I v 1,640,316 1927' P. GANGLER CLOSING BAGS Original Filed Oct. 6, 1923' s s' eets-sheetz P'. 'GANGLER CLOSING BAGS Orizinal il 6, 1923 3 Shah-Shoot 3 Patented Aug. 23, 1927.-

UNITED STATES PATENT .QFFICE.

PAUL GANGLER. OF ESSLINGEN, GERMANY. ASSIGNOB TO FIRM: FR. HES SEB SCHINENFABRIK-AKTIENGESELLSCHAFT, OF .STUTTGART-CANST ATT, GERMANY.

'cLosmG Baas.

Original application flled- October 6, 1928, Serial 110. 666,986, and in Germany October 12, 11528. Divided and this application filed June'30, 1925. Serial No. 40,611.

My invention relates to the closing' of filled parcels comprising an inner bagfand an outer envelope, such parcels consisting for instance .of a carton with a bag. of parchment paper or the like inserted therein, such parcels being used, for instance for powdered substances such as cocoa.

It is an object of my invention to provide an improved machine for performing the closing operation in a simple and reliable manner which is equal to the manual closing hitherto efiected.

In the drawings aflixed to this specification and forming part thereof a machine embodying my invention is illustrated diagrammatically by way of example. In the draw-ings Fig. 1 is an elevation showing the means for flattening the projecting parts of the inner bag, certain portions as well as the parcel itself being shown in vertical section.

Fig. 2 is a front elevation corresponding to Fig. 1 with some parts removed for the sake of clearness.

Fig. 3 is an elevation showing the means for folding the projecting portion of the inner bag in zigzag fashion, some parts of this device being shown in vertical. section.

Fig. 4 is a plan view of the two sets of members serving for "folding the said portion.

Fig. 5 is an elevation of a single set of these same members, the means for operating said members being partly shown in vertical section.

Figs. 6-9 are diagrams illustrating the gradual folding of the projecting portion of the inner bag.

The means illustrated in the drawings form part of a packing machine in which the parcels P are fed to the single stations step by step on a straight feed track formed by angular bottom pieces 17, 17" and to ledges 18', 18", the feeding device employe being of a well known type and therefore not shown in the drawing. On the single stations means, well known per so, are provided for filling, closing, labelling and handling in a general manner the single parcels. The angular'pieces 17, 17 are fixed in a well known manner on supports 100 mounted on the machine table T. The parcel P,

shown in the drawing by way of example, consists of an outer carton a with four top flaps a a, a, a, and an inner envelope or bag I), the top portion ofwhich projects from the carton. The parcel shown in Figs. i i 1 and 2 has already been filled by well known means and shall now be closed by first of all flattening the projecting portion I).

This is effected by blade-shaped spreading members 1 and 1 attached to arms 5, 5 which are mounted on bolts 4, 4 rotatably located in lateral eyes ,6, 6' ofa central'support 7 fixed to a rail 8. This rail is arranged to be reciprocated 1 vertically in a guide 14 of the standard 9 by means of alever 10 turning on bolts 19 located in a bearing 101 of the standard 9 and ana'eccentric rod 11 actuated ina well known manner by an eccentric on the main shaft (not shown). On the inner ends-of the bolts 4, 4 are fixed arms 2, 2', which carry rollers 3, 3 held in contact with switch members 12, 12 b means of a spring 20. The switch members are arranged for lateral adjustment on a plate 21 which is mounted on the shown in the drawing by' lowering-ra l 8.

This causes the spreading members 1, 1 to enter the projecting portion b. of the inner envelo e or bag 12 and, owing to the cooperation of the switch members 12, 12 and guide rollers 3, 3', to be gradually moved into their lower and outer end position shown in the drawing. In this manner the pipper portion 2) of the inner bag is spread In correspondence with the material contained in the bag and the form of the parcel, the portion 6 after having been fiattened in the manner above described, can

having a greater width than the flattened portion 7). The arms 16, 16 are arranged to be oscillated and to be shifted in the direction towards the spreading members 1, 1 by well known means not shown in the drawings. On the parcel reaching the station illustrated in'Figs. 1 and 2, the pressing vmembers 16, 22 and 16, 22 assume their inoperativev position shown in dotted lines. "However, before or after the spreading members 1 1 have risen again, the presser plates 22, 22 are swung by the arms 16, 16 into vertical position and are then pressed against the flattened portion b in parallel thereto, whereby this portion is pressed flat between the plates. After the parts have returned into their initial position, the parcel P is fed to the next succeeding station shown in Fig. 3, whereby the flattened portion b is folded in zigzag fashion and inserted in the carton a.

During this feed motion of the parcel the projecting flattened portion b passes through between guide plates 38, 38' (Figs.

3 and into the slot 23' of a die-shaped holder 23 fixed to a lever 24. This lever is rotatably located at 25 in a support (not shown) mounted on the machine table and ca-nbe rocked upwards and downwards by means of the arm 24' and the rod 24 of an eccentric device of awell known kind (not shown) and an eccentric mounted on the main shaft.

On either side of the flattened projecting portion 6 of the inner bag there are arranged, one above the other, a plurality of folding members which are moved, one after the other, towards the projecting portion b of the bag in such manner that the inner working edges of the folding members move across the middle of the parcel, alternatingly overlapping each other fromeither side and thereby fold the projecting portion 1) between them in zigzag fashion, one part thereof being carried in the middle plane of. the parcel by the slot 23 of the holder 23.

I In the modification illustrated in the drawings three folding members I, III, V and II, IV, VI, respectively, are arranged on either side, these "members being fixed to levers 26, 26,-26 and 27, 27, 27 which are pivotally located by means of bolts 28, 28 in supports 29 and 30 fixed to the guides 31 and 32 of supports 33 and 34 mounted on the table T. Each of the levers26, 26, 26" and 27, 27, 27" has; an outwards directed arm 35,35" 35 and 36, 36', 36", respec tively, guide rollers 37, 37', 37" and 39, 39,

39 being mounted at the ends of thev arms.

ber of folding members and being, adjust ably attached to rails 40 and 41. The arms 35, 35, 35 and 36, 36, 36 are held incontact with the respective cams 42 and 43 by means of springs 46 and 47 inserted between extensions 48 and 49 of the supports 29 and 30 and extensions 50 and 51 of the arms 26, 26 and 26 and 27, 27', 27", respectively. The several cams 42 and 43 are adjusted with regard to each other and with regard to the arms 35, 35, 35" and 36, 36, 36" in such manner that, on the rails 40 and 4l'being moved forwards, the folding members I, II, III, IV, V, VI are moved in this order, one after the other, from the' outer position shown in dotted lines with respect to lever 26 into the folding position disclosed in Fig. 3. The rails 40 and 41 which are displaceably guided between guides 31 and 32 of the supports 33 and 34 are moved from their outer inoperative position shown in dotted lines on the left of Fig. 3 into the inner operative position shown in full lines by means of springs 44 and 45 having one end fixed to the rails and the other to the guides. The rails are moved back by angl'elevers 54 and 55 pivotally located at 52 and 53 in supports 33 and 34, these levers being actuated in a well known manner from eccentrics mounted on the main shaft by means of links 56and 57 and connecting rods 54 and 55.

hill

The folding members I-VI might course be actuated, one after the other, also in a different manner, for instance by arms 35 and 36 ofdifferent length; in this case, ondly a single cam would be required on each si e.

Before the folding members are pulled back again into their inoperative position, the die-shaped holder 23 is preferably pressed by a corresponding movement of lever 24 onto all the folding members in order to obtain as sharp a crease as possible. All the folding members are then withdrawn from the finished 'fold by withdrawing the cams 42 and 43 and the end of the inner bag folded in zigzag fashion is now entered into the carton a.- In the present case, this is effected by pressing the folded end down into the carton a by means of the die or stamp 23 (Fig. 9).

In this manner the inner bag 6 is perfectly closed and the parcel, being now fed forwards through the machine, is thereafter treated in well known manner for closing the flaps ai a of the carton a, the pasting on of the label and so forth.

I wish it to be understood that I do not desire to be limited to the exact details of construction shown and described, for obvious modifications will occur to a person skilled in the art.

I claim 1. In a machine for closlng a filled bag, a plurality of folding members arranged one above the other on either side of the empty portion of the bag, and means for successivel advancing said folding members to war said em ty portion so as to overlap each other an to cause said folding members to fold said empty portion in zigzag fashion.

2. In a machine for closing a filled bag, means for flattening the upper empty portion of the bag, means for exerting pressure from both sides upon the flattened portion, and means for folding said portion in zigzag fashion.

3. In a machine for closing a filled bag, means for flattening the upper emptyportion of the bag, a pluralit of folding members arranged one above t e other on either side of the empty portion of the bag, and means for successively advancing said folding members'toward said empt portion so as to cause said folding mem ers to fold said empty portion in zigzag fashion by overlapping each other.

4. In a machine for closing a filled. bag, two blade-shaped arms adapted to be lowered into the upper empty portion of the bag, means for moving said lowered arms in opposite directions for flattening the said empty portion of the bag by extending it longitudinally, a plurality of folding members arranged one above the other on either side of said empty portion, and means for successively advancing said folding members toward said empty portion so as to cause said folding members to fold said empty portion in zigzag fashion by overlapping each other.

opposite directions for flattening the said empty portion of the bag by extending it longitudinally, means for exerting pressure from both sides on the extended portion of the bag, a plurality of folding members arranged one above the other on either side of said em ty portion, and means for successively a-vancing said folding members toward said empt portion so as to cause said folding mem ers to fold said empty portion in zigzag fashion by overlapping each other.

6. In a machine for closing a filled bag, a plurality of folding members arranged one above the other on either side of the upper empty portion of the bag, and means for successively advancing said folding members toward said empty portion so as to cause said folding members to fold said empty portion in zigzag fashion by overlapping each other, a slide, and cams on said slide adapted to act successively on said folding members.

7. In a machine for closing a filled bag, means for flattening the upper'empty portion of the bag, means for folding said portion in zizzag fashion, and means comprising a member having a slot for guiding said portion in the central plane of the bag.

8. In a machine for closing the upper empty portion of a filled bag inserted in an outer envelope and projecting therefrom, means for folding said empty portion in zigzag fashion, and a slotted die for guiding said portion in the central plane of the arcel and for compressing it after it has en folded.

In testimony whereof I aflix my signature.

PAUL GANGLER. 

